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Financial Instruments (Tables)
 6 Months Ended
Jun. 30, 2014
Investments Debt And Equity Securities [Abstract]  
Cash and Cash Equivalents Held in Investment Portfolio

The following table summarizes the fair value of our cash and cash equivalents held in our current investment portfolio:

 

     Amortized
Cost		      Gross
Unrealized
(Losses)		      Fair Value  

June 30, 2014

         

Cash

    $ 513,079       $ —        $ 513,079   

Cash equivalents

      17,334,018         —          17,334,018   
  

 

 

     

 

 

     

 

 

  

Total cash, cash equivalents, and marketable securities

    $ 17,847,097       $ —         $ 17,847,097   
  

 

 

     

 

 

     

 

 

  

December 31, 2013

         

Cash

    $ 1,355,281       $ —         $ 1,355,281   

Cash equivalents

      29,230,143         —          29,230,143   
  

 

 

     

 

 

     

 

 

  

Total cash, cash equivalents, and marketable securities

    $ 30,585,424       $ —         $ 30,585,424